1011321601323 has 24 divisors (see below), whose sum is σ = 1483146840000. Its totient is φ = 612512965680.

The previous prime is 1011321601307. The next prime is 1011321601331. The reversal of 1011321601323 is 3231061231101.

It is not a de Polignac number, because 1011321601323 - 2⁴ = 1011321601307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011321601293 and 1011321601302.

It is not an unprimeable number, because it can be changed into a prime (1011321609323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385153 + ... + 1473426.

It is an arithmetic number, because the mean of its divisors is an integer number (61797785000).

Almost surely, 2^{1011321601323} is an apocalyptic number.

1011321601323 is a deficient number, since it is larger than the sum of its proper divisors (471825238677).

1011321601323 is a wasteful number, since it uses less digits than its factorization.

1011321601323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860103 (or 1860092 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 1011321601323 its reverse (3231061231101), we get a palindrome (4242382832424).

The spelling of 1011321601323 in words is "one trillion, eleven billion, three hundred twenty-one million, six hundred one thousand, three hundred twenty-three".